Appalachiosaurus fossil map
Where fossils of Appalachiosaurus have been found, shown on the Earth as it looked about 75 million years ago and on today’s map.
Dots are fossil collections recorded in the Paleobiology Database. The “then” view moves today’s fossil sites back to their positions 75 million years ago (the time slice nearest the median age of the fossils) using the Merdith et al. (2021) plate model; positions are approximate. Open on the timeline map →
| Group | Theropods |
|---|---|
| Lived | 85.7–66 million years ago (Santonian to Maastrichtian) |
| Periods | Cretaceous |
| Named by | Carr et al. 2005 |
| Fossil records | 6 occurrences at 6 locations (PBDB) |
| Found in | United States |
| Rock formations | Blufftown, Demopolis Chalk, Coachman, Steel Creek, Donoho Creek |
About Appalachiosaurus
Appalachiosaurus ( AP-ə-LAY-chee-oh-SOR-əs; "Appalachian lizard") is a genus of tyrannosauroid theropod dinosaur from the Late Cretaceous period of what is now eastern North America. It was a basal member of the clade Eutyrannosauria, meaning it was rather close in relation to the true tyrannosaurids such as Tyrannosaurus. Like most theropods, it was a bipedal predator. Only a juvenile skeleton has been found, representing an animal approximately 6.5 metres (21 ft) long and weighing 623 kilograms (1,373 lb), which indicates an adult would have been significantly larger.
Fossils of Appalachiosaurus were found in central Alabama's Demopolis Chalk Formation. This formation dates to the middle of the Campanian age of the Late Cretaceous, around 77 million years ago. Fossil material assigned to Appalachiosaurus is also known from the Donoho Creek and Tar Heel/Coachman formations of South and North Carolina respectively in 2007, as well as the Ripley Formation in the Hannahatchee Creek in Georgia.
Text in “About” is quoted from the Wikipedia article Appalachiosaurus (revision 1354045433), licensed under CC BY-SA 4.0; introduction excerpted verbatim, formatting removed. Ages, family, authority and fossil records: Paleobiology Database, accessed 23 October 2026. Ages are those of the rock layers the fossils were found in. Wikidata: Q773996.
